Isozaki; Sadao
Patent Applications and Registrations
Patent applications and USPTO patent grants for Isozaki; Sadao.The latest application filed is for "telephone set".
- Isozaki; Sadao - Tokyo JP
| Patent | Date |
|---|---|
| Telephone set Grant D323,827 - Kido , et al. February 11, 1 | 1992-02-11 |
| Telephone instrument set Grant D320,797 - Kido , et al. October 15, 1 | 1991-10-15 |
| Direct station telephone selector Grant D315,564 - Kido , et al. March 19, 1 | 1991-03-19 |
| Telephone apparatus Grant D313,235 - Kido , et al. December 25, 1 | 1990-12-25 |
| Telephone Grant D310,076 - Kido , et al. August 21, 1 | 1990-08-21 |
| Attendant telephone switchboard Grant D304,564 - Kido , et al. November 14, 1 | 1989-11-14 |
| Direct station telephone selector Grant D303,801 - Kido , et al. October 3, 1 | 1989-10-03 |
| Telephone apparatus with speakerphone and display panel Grant D299,134 - Kido , et al. December 27, 1 | 1988-12-27 |
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